A Comparative Evaluation of the Physical and Chemical Characteristics of Composted Tea Tree (Melaleuca alternifolia L.) with Pine Bark Growing Media in Tobacco (Nicotiana tabucum L.) Seedling Production

Table 3

Nutrient content and pH of soil used in sand media preparation.

Mechanical analysis, gkg^−1 soil
Sand	926
Silt	42
Clay	32
Nutrient content, %
Organic C	7.7
Total N	−0.022 (interpreted as nil)
Exchangeable Ca	0.109
Exchangeable Mg	0.014
Exchangeable K	0.018
Soil pH	6.1